Just a FYI, I did some deep digging and found some water temps from 2001 / 2010 at Bonneville Dam.

On 3/15/2001 the water was 5.8C = 42.44 degrees Farenheit...
On 3/15/2010 the water was 6.66C = 44.0 degrees Farenheit...

Keith
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It's time to put the red rubber nose away, clown seasons over.